Nortel Networks 212777 OSPF Implementation in Web OS

WebOS 10.0 Application Guide
74 Chapter 4: OSPF 212777-A, February 2002
OSPF Implementation in Web OS
WebOS 10.0 supports a single instance of OSPF and up to 1K routes on the network. The fol-
lowing sections describe OSPF implementation in WebOS:
n“Configurable Parameters” on page 74
n“Defining Areas” on page 75
n“Interface Cost” on page 77
n“Electing the Designated Router and Backup” on page 77
n“Summarizing Routes” on page 77
n“Default Routes” on page 78
n“Virtua l Lin ks” on page 79
n“Router ID” on page 80
n“Authentication” on page 80
n“Host Routes for Load Balancing” on page 82
n“OSPF Features Not Supported in This Release” on page 82
Configurable Parameters
In WebOS 10.0, OSPF parameters can be configured through the Command Line Interface
(CLI), WebOS Browser-Based Interface (BBI) for Alteon AD4 and 184 switches, or through
SNMP.
The CLI supports the following parameters: interface output cost, interface priority, dead and
hello intervals, retransmission interval, and interface transmit delay.
In addition to the above parameters, you can also specify the following:
nShortest Path First (SPF) interval—Time interval between successive calculations of the
shortest path tree using the Dijkstra’s algorithm.
nStub area metric—A stub area can be configured to send a numeric metric value such that
all routes received via that stub area carry the configured metric to potentially influence
routing decisions.
nDefault routes—Default routes with weight metrics can be manually injected into transit
areas. This helps establish a preferred route when multiple routing devices exist between
two areas. It also helps route traffic to external networks.